Build check fixes

Author: Mikael Wills

lib/sip_ua.dart

@@ -3,5 +3,3 @@ export 'src/sip_message.dart';
 export 'src/sip_ua_helper.dart';
 export 'src/transport_type.dart';
 export 'src/uri.dart';
-
-

lib/src/config.dart

@@ -7,7 +7,6 @@ import 'exceptions.dart' as Exceptions;
 import 'grammar.dart';
 import 'logger.dart';
 import 'transports/web_socket.dart';
-import 'uri.dart';
 import 'utils.dart' as Utils;
 
 // Default settings.

lib/src/rtc_session.dart

@@ -22,11 +22,9 @@ import 'rtc_session/info.dart' as RTCSession_Info;
 import 'rtc_session/info.dart';
 import 'rtc_session/refer_notifier.dart';
 import 'rtc_session/refer_subscriber.dart';
-import 'sip_message.dart';
 import 'timers.dart';
 import 'transactions/transaction_base.dart';
 import 'ua.dart';
-import 'uri.dart';
 import 'utils.dart' as utils;
 
 class C {
@@ -3064,7 +3062,7 @@ class RTCSession extends EventManager implements Owner {
   }
 
   /// SDP offers may contain text media channels. e.g. Older clients using linphone.
-  /// 
+  ///
   /// WebRTC does not support text media channels, so remove them.
   String? _sdpOfferToWebRTC(String? sdpInput) {
     if (sdpInput == null) {

lib/src/rtc_session/dtmf.dart

@@ -7,7 +7,6 @@ import '../event_manager/internal_events.dart';
 import '../exceptions.dart' as Exceptions;
 import '../logger.dart';
 import '../rtc_session.dart' as rtc;
-import '../sip_message.dart';
 import '../utils.dart' as Utils;
 
 class C {

lib/src/sip_ua_helper.dart

@@ -17,7 +17,6 @@ import 'message.dart';
 import 'options.dart';
 import 'rtc_session.dart';
 import 'rtc_session/refer_subscriber.dart';
-import 'sip_message.dart';
 import 'stack_trace_nj.dart';
 import 'subscriber.dart';
 import 'transports/web_socket.dart';
@@ -180,9 +179,9 @@ class SIPUAHelper extends EventManager {
     _settings.instance_id = uaSettings.instanceId;
     _settings.registrar_server = uaSettings.registrarServer;
     _settings.contact_uri = uaSettings.contact_uri;
-    _settings.connection_recovery_max_interval = 
+    _settings.connection_recovery_max_interval =
         uaSettings.connectionRecoveryMaxInterval;
-    _settings.connection_recovery_min_interval = 
+    _settings.connection_recovery_min_interval =
         uaSettings.connectionRecoveryMinInterval;
     _settings.terminateOnAudioMediaPortZero =
         uaSettings.terminateOnMediaPortZero;
@@ -414,7 +413,8 @@ class SIPUAHelper extends EventManager {
     return _ua!.sendMessage(target, body, options, params);
   }
 
-  Options sendOptions(String target, String body, Map<String, dynamic>? params) {
+  Options sendOptions(
+      String target, String body, Map<String, dynamic>? params) {
     return _ua!.sendOptions(target, body, params);
   }
 

lib/src/transports/tcp_socket.dart

@@ -179,7 +179,7 @@ class SIPUATcpSocket extends SIPUASocketInterface {
 
   @override
   String? get url {
-    if (_host == null || _port == null) { 
+    if (_host == null || _port == null) {
       return null;
     }
     return '$_host:$_port';